Hi Andy,
On 09/04/2025 00:31, kernel test robot wrote:
Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.15-rc1 next-20250408]
[cannot apply to trace/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Andy-Chiu/riscv-ftrace-factor-out-code-defined-by-WITH_ARG/20250408-025114
base: linus/master
patch link:
https://lore.kernel.org/r/20250407180838.42877-4-andybnac%40gmail.com
patch subject: [PATCH v4 04/12] kernel: ftrace: export ftrace_sync_ipi
config: xtensa-randconfig-001-20250409
(https://download.01.org/0day-ci/archive/20250409/[email protected]/config)
compiler: xtensa-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build):
(https://download.01.org/0day-ci/archive/20250409/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes:
https://lore.kernel.org/oe-kbuild-all/[email protected]/
All warnings (new ones prefixed by >>):
kernel/trace/ftrace.c:191:6: warning: no previous prototype for
'ftrace_sync_ipi' [-Wmissing-prototypes]
191 | void ftrace_sync_ipi(void *data)
| ^~~~~~~~~~~~~~~
vim +/ftrace_sync_ipi +191 kernel/trace/ftrace.c
190
> 191 void ftrace_sync_ipi(void *data)
192 {
193 /* Probably not needed, but do it anyway */
194 smp_rmb();
195 }
196
I fixed this with the following that I squashed into your patch, no need
to resend a new series for this.
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 0d4eec5747074..30374478cb077 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -635,6 +635,8 @@ enum {
#define ftrace_get_symaddr(fentry_ip) (0)
#endif
+void ftrace_sync_ipi(void *data);
+
#ifdef CONFIG_DYNAMIC_FTRACE
void ftrace_arch_code_modify_prepare(void);
@@ -807,7 +809,6 @@ extern void ftrace_call(void);
extern void ftrace_regs_call(void);
extern void mcount_call(void);
-void ftrace_sync_ipi(void *data);
void ftrace_modify_all_code(int command);
#ifndef FTRACE_ADDR
Thanks,
Alex
